Thanks.
And I found a source in French: https://bonpote.com/analyse-le-concept-dempreinte-carbone-a-t-il-ete-invente-par-les-petroliers/ by @bonpoteofficiel (a much-famous collective blog on climate warming, literaly "good friend").
#Ogilvy #Ogilvy_and_Mather #Mather
#BritishPetroleum
#British_Petroleum